<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>404 - 页面未找到</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        body {
            background-color: #f5f5f5;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            text-align: center;
            line-height: 1.6;
        }

        .container {
            padding: 2rem;
            max-width: 600px;
        }

        .error-code {
            font-size: 6rem;
            color: #dc3545;
            font-weight: bold;
            margin-bottom: 0.5rem;
        }

        .message {
            font-size: 2rem;
            color: #333;
            margin-bottom: 1.5rem;
        }

        .return-link {
            display: inline-block;
            padding: 0.8rem 1.5rem;
            background-color: #007bff;
            color: white;
            text-decoration: none;
            border-radius: 4px;
            font-size: 1.1rem;
            transition: background-color 0.3s;
        }

        .return-link:hover {
            background-color: #0056b3;
        }

        @media (max-width: 600px) {
            .error-code {
                font-size: 4rem;
            }
            .message {
                font-size: 1.5rem;
            }
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="error-code">404</div>
        <div class="message">很抱歉，您访问的页面不存在</div>
        <a href="/" class="return-link">返回首页</a>
    </div>
</body>
</html>s